You've condemned millions of people to death because over history it's been done at least that many times for various reasons in various cultures. Would I do it? Of course not.
Not people I’d care to share the planet with. I’ve had many kittens over the years that died from awful diseases, fleas, cars, and feral dogs, and that still haunts me that I wasn’t able to prevent it from happening. To willfully murder tiny, helpless, healthy and loving little creatures is simply monstrous.